* {
  box-sizing: border-box;
}

body {
  font-family: "DM Sans", sans-serif;
  transition: background 0.3s, color 0.3s;
}

/* CSS Variables – Dark (default) */
:root,
[data-theme="dark"] {
  --bg-base: #000000;
  --bg-surface: #0a0a0a;
  --bg-surface-soft: rgba(255, 255, 255, 0.03);
  --bg-surface-hover: rgba(255, 255, 255, 0.06);
  --bg-elevated: rgba(0, 0, 0, 0.6);
  --bg-sidebar: rgba(0, 0, 0, 0.4);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.45);
  --text-placeholder: rgba(255, 255, 255, 0.25);
  --border-default: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  --border-accent: rgba(99, 102, 241, 0.5);
  --accent-primary: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --card-bg: rgba(255, 255, 255, 0.02);
  --card-selected-bg: rgba(99, 102, 241, 0.08);
  --card-selected-border: rgba(99, 102, 241, 0.6);
  --input-bg: transparent;
  --input-border: rgba(255, 255, 255, 0.1);
  --input-focus: rgba(99, 102, 241, 0.4);
  --success-bg: rgba(52, 211, 153, 0.12);
  --success-border: rgba(52, 211, 153, 0.3);
}

/* Light theme overrides */
[data-theme="light"] {
  --bg-base: #fafafa;
  --bg-surface: #f4f4f5;
  --bg-surface-soft: rgba(0, 0, 0, 0.02);
  --bg-surface-hover: rgba(0, 0, 0, 0.04);
  --bg-elevated: rgba(255, 255, 255, 0.85);
  --bg-sidebar: rgba(255, 255, 255, 0.7);
  --text-primary: #09090b;
  --text-secondary: rgba(0, 0, 0, 0.7);
  --text-muted: rgba(0, 0, 0, 0.5);
  --text-placeholder: rgba(0, 0, 0, 0.3);
  --border-default: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.12);
  --border-accent: rgba(99, 102, 241, 0.4);
  --card-bg: rgba(0, 0, 0, 0.02);
  --card-selected-bg: rgba(99, 102, 241, 0.06);
  --card-selected-border: rgba(99, 102, 241, 0.5);
  --input-border: rgba(0, 0, 0, 0.1);
  --input-focus: rgba(99, 102, 241, 0.2);
}

body {
  background: var(--bg-base);
  color: var(--text-primary);
}

/* Noise overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.5;
}

.grid-bg {
  background-image: linear-gradient(var(--border-default) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-default) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.5;
}

.radial-glow {
  background: radial-gradient(
    ellipse 70% 50% at 50% 0%,
    var(--accent-glow) 0%,
    transparent 60%
  );
}

/* Step panels */
.step-panel {
  display: none;
  animation: stepIn 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.step-panel.active {
  display: block;
}

@keyframes stepIn {
  from {
    opacity: 0;
    transform: translateX(24px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Form inputs */
.ev-input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  padding: 12px 16px;
  font-family: "DM Sans", sans-serif;
  font-size: 15px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.ev-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--input-focus);
}

.ev-input::placeholder {
  color: var(--text-placeholder);
}

.ev-input option {
  background: var(--bg-surface);
  color: var(--text-primary);
}

/* Service card */
.service-card {
  border: 1px solid var(--border-default);
  border-radius: 14px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.18s;
  background: var(--card-bg);
  position: relative;
  user-select: none;
}

.service-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-surface-hover);
  transform: translateY(-1px);
}

.service-card.selected {
  border-color: var(--card-selected-border);
  background: var(--card-selected-bg);
  box-shadow: 0 0 0 1px var(--border-accent);
}

.service-card.selected .svc-check {
  opacity: 1;
  transform: scale(1);
}

.svc-check {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  display: grid;
  place-items: center;
  font-size: 10px;
  color: white;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.2s;
}

/* Budget cards */
.budget-card {
  border: 1px solid var(--border-default);
  border-radius: 12px;
  padding: 16px 20px;
  cursor: pointer;
  transition: all 0.18s;
  background: var(--card-bg);
  display: flex;
  align-items: center;
  gap: 12px;
}

.budget-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-surface-hover);
}

.budget-card.selected {
  border-color: var(--card-selected-border);
  background: var(--card-selected-bg);
  box-shadow: 0 0 0 1px var(--border-accent);
}

.budget-radio {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--text-muted);
  flex-shrink: 0;
  transition: all 0.18s;
  display: grid;
  place-items: center;
}

.budget-card.selected .budget-radio {
  border-color: var(--accent-primary);
  background: var(--accent-primary);
}

.budget-card.selected .budget-radio::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: white;
}

/* Timeline & Goals */
.tl-opt,
.goal-opt {
  border: 1px solid var(--border-default);
  border-radius: 10px;
  padding: 12px 16px;
  cursor: pointer;
  transition: all 0.18s;
  background: var(--card-bg);
  text-align: center;
  user-select: none;
  font-size: 13px;
}

.tl-opt:hover,
.goal-opt:hover {
  border-color: var(--border-strong);
}

.tl-opt.selected {
  border-color: var(--card-selected-border);
  background: var(--card-selected-bg);
  box-shadow: 0 0 0 1px var(--border-accent);
  color: #818cf8;
}

.goal-opt.selected {
  border-color: var(--card-selected-border);
  background: var(--card-selected-bg);
  box-shadow: 0 0 0 1px var(--border-accent);
}

/* File zone */
.file-zone {
  border: 2px dashed var(--border-default);
  border-radius: 12px;
  padding: 28px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.file-zone:hover {
  border-color: var(--accent-primary);
  background: var(--card-selected-bg);
}

/* Progress & Sidebar */
.progress-fill {
  transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.step-nav-item {
  transition: all 0.2s;
}

.step-nav-item:hover {
  background: var(--bg-surface-hover);
}

.status-pulse {
  animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* Animations */
@keyframes successPop {
  0% {
    transform: scale(0.5);
    opacity: 0;
  }

  60% {
    transform: scale(1.1);
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.success-icon {
  animation: successPop 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.fade-up {
  animation: fadeUp 0.5s ease both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-up-d1 {
  animation-delay: 0.1s;
}

.fade-up-d2 {
  animation-delay: 0.2s;
}

.fade-up-d3 {
  animation-delay: 0.3s;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}

/* Theme toggle icons */
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: all 0.3s;
}

[data-theme="dark"] .icon-sun {
  opacity: 1;
  transform: scale(1);
}

[data-theme="dark"] .icon-moon {
  opacity: 0;
  transform: scale(0.5) rotate(90deg);
}

[data-theme="light"] .icon-sun {
  opacity: 0;
  transform: scale(0.5) rotate(-90deg);
}

[data-theme="light"] .icon-moon {
  opacity: 1;
  transform: scale(1);
}